/usr/src/openafs-1.6.1/include/afs/fssync.h is in openafs-modules-dkms 1.6.1-1.
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* Copyright 2000, International Business Machines Corporation and others.
* All Rights Reserved.
*
* This software has been released under the terms of the IBM Public
* License. For details, see the LICENSE file in the top-level source
* directory or online at http://www.openafs.org/dl/license10.html
*
* Portions Copyright (c) 2006-2010 Sine Nomine Associates
*/
/*
System: VICE-TWO
Module: fssync.h
Institution: The Information Technology Center, Carnegie-Mellon University
*/
#ifndef __fssync_h_
#define __fssync_h_
#define FSYNC_PROTO_VERSION 3
#include "voldefs.h"
/**
* FSYNC command codes.
*
* If you add more command codes here, be sure to add some documentation
* in doc/arch/fssync.txt.
*/
enum FSYNCOpCode {
FSYNC_VOL_ON = SYNC_COM_CODE_DECL(0), /**< bring Volume online */
FSYNC_VOL_OFF = SYNC_COM_CODE_DECL(1), /**< take Volume offline */
FSYNC_VOL_LISTVOLUMES = SYNC_COM_CODE_DECL(2), /**< Update local volume list */
FSYNC_VOL_NEEDVOLUME = SYNC_COM_CODE_DECL(3), /**< Put volume in whatever mode (offline, or whatever)
* best fits the attachment mode provided in reason */
FSYNC_VOL_MOVE = SYNC_COM_CODE_DECL(4), /**< Generate temporary relocation information
* for this volume to another site, to be used
* if this volume disappears */
FSYNC_VOL_BREAKCBKS = SYNC_COM_CODE_DECL(5), /**< Break all the callbacks on this volume */
FSYNC_VOL_DONE = SYNC_COM_CODE_DECL(6), /**< Done with this volume (used after a delete).
* Don't put online, but remove from list */
FSYNC_VOL_QUERY = SYNC_COM_CODE_DECL(7), /**< query the volume state */
FSYNC_VOL_QUERY_HDR = SYNC_COM_CODE_DECL(8), /**< query the volume disk data structure */
FSYNC_VOL_QUERY_VOP = SYNC_COM_CODE_DECL(9), /**< query the volume for pending vol op info */
FSYNC_VOL_STATS_GENERAL = SYNC_COM_CODE_DECL(10), /**< query the general volume package statistics */
FSYNC_VOL_STATS_VICEP = SYNC_COM_CODE_DECL(11), /**< query the per-partition volume package stats */
FSYNC_VOL_STATS_HASH = SYNC_COM_CODE_DECL(12), /**< query the per hash-chain volume package stats */
FSYNC_VOL_STATS_HDR = SYNC_COM_CODE_DECL(13), /**< query the volume header cache statistics */
FSYNC_VOL_STATS_VLRU = SYNC_COM_CODE_DECL(14), /**< query the VLRU statistics */
FSYNC_VOL_ATTACH = SYNC_COM_CODE_DECL(15), /**< Force volume online */
FSYNC_VOL_FORCE_ERROR = SYNC_COM_CODE_DECL(16), /**< force volume into error state */
FSYNC_VOL_LEAVE_OFF = SYNC_COM_CODE_DECL(17), /**< end vol op, but leave volume offline */
FSYNC_VOL_QUERY_VNODE = SYNC_COM_CODE_DECL(18), /**< query vnode state */
FSYNC_VG_QUERY = SYNC_COM_CODE_DECL(19), /**< Query volume group membership for a given volume id */
FSYNC_VG_ADD = SYNC_COM_CODE_DECL(20), /**< add a volume id to a vg */
FSYNC_VG_DEL = SYNC_COM_CODE_DECL(21), /**< delete a volume id from a vg */
FSYNC_VG_SCAN = SYNC_COM_CODE_DECL(22), /**< force a re-scan of a given partition */
FSYNC_VG_SCAN_ALL = SYNC_COM_CODE_DECL(23), /**< force a re-scan of all vice partitions */
FSYNC_OP_CODE_END
};
/**
* FSYNC reason codes.
*/
enum FSYNCReasonCode {
FSYNC_WHATEVER = SYNC_REASON_CODE_DECL(0), /**< XXXX */
FSYNC_SALVAGE = SYNC_REASON_CODE_DECL(1), /**< volume is being salvaged */
FSYNC_MOVE = SYNC_REASON_CODE_DECL(2), /**< volume is being moved */
FSYNC_OPERATOR = SYNC_REASON_CODE_DECL(3), /**< operator forced volume offline */
FSYNC_EXCLUSIVE = SYNC_REASON_CODE_DECL(4), /**< somebody else has the volume offline */
FSYNC_UNKNOWN_VOLID = SYNC_REASON_CODE_DECL(5), /**< volume id not known by fileserver */
FSYNC_HDR_NOT_ATTACHED = SYNC_REASON_CODE_DECL(6), /**< volume header not currently attached */
FSYNC_NO_PENDING_VOL_OP = SYNC_REASON_CODE_DECL(7), /**< no volume operation pending */
FSYNC_VOL_PKG_ERROR = SYNC_REASON_CODE_DECL(8), /**< error in the volume package */
FSYNC_UNKNOWN_VNID = SYNC_REASON_CODE_DECL(9), /**< vnode id not known by fileserver */
FSYNC_WRONG_PART = SYNC_REASON_CODE_DECL(10),/**< volume attached on different partition */
FSYNC_BAD_STATE = SYNC_REASON_CODE_DECL(11),/**< current volume state does not allow this operation */
FSYNC_BAD_PART = SYNC_REASON_CODE_DECL(12),/**< invalid disk partition */
FSYNC_PART_SCANNING = SYNC_REASON_CODE_DECL(13),/**< partition is busy scanning VGs */
FSYNC_REASON_CODE_END
};
/* FSYNC response codes */
/* FSYNC flag codes */
struct offlineInfo {
afs_uint32 volumeID;
char partName[16];
};
/**
* fssync protocol volume operation request message.
*/
typedef struct FSSYNC_VolOp_hdr {
afs_uint32 volume; /**< volume id associated with request */
char partName[16]; /**< partition name, e.g. /vicepa */
} FSSYNC_VolOp_hdr;
typedef struct FSSYNC_VolOp_command {
SYNC_command_hdr * hdr;
FSSYNC_VolOp_hdr * vop;
SYNC_command * com;
struct offlineInfo * v;
struct offlineInfo * volumes;
} FSSYNC_VolOp_command;
/**
* volume operation processing state.
*/
enum FSSYNC_VolOpState {
FSSYNC_VolOpPending = 0, /**< volume operation request received */
FSSYNC_VolOpDenied = 1, /**< volume operation request denied */
FSSYNC_VolOpRunningOnline = 2, /**< volume operation is running while volume is online */
FSSYNC_VolOpRunningOffline = 3, /**< volume operation is running while volume is offline */
FSSYNC_VolOpRunningUnknown = 4 /**< volume operation is running; VVolOpLeaveOnline_r resolution unknown */
};
/**
* volume operation information node.
*
* @note this structure is attached to a struct Volume to signify that
* a volume operation is in-progress.
*
* @see Volume
* @see VRegisterVolOp_r
* @see VDeregisterVolOp_r
*/
typedef struct FSSYNC_VolOp_info {
SYNC_command_hdr com;
FSSYNC_VolOp_hdr vop;
enum FSSYNC_VolOpState vol_op_state;
} FSSYNC_VolOp_info;
/**
* fssync protocol volume package statistics request node.
*/
typedef struct FSSYNC_StatsOp_hdr {
union {
afs_uint32 vlru_generation; /**< vlru generation id */
afs_uint32 hash_bucket; /**< volume hash bucket */
char partName[16]; /**< partition name */
} args;
} FSSYNC_StatsOp_hdr;
typedef struct FSSYNC_StatsOp_command {
SYNC_command_hdr * hdr;
FSSYNC_StatsOp_hdr * sop;
SYNC_command * com;
} FSSYNC_StatsOp_command;
/**
* fssync protocol vnode query request message.
*/
typedef struct FSSYNC_VnQry_hdr {
afs_uint32 volume; /**< volume id */
afs_uint32 vnode; /**< vnode id */
afs_uint32 unique; /**< uniqifier */
afs_uint32 spare; /**< reserved for future use */
char partName[16]; /**< partition name */
} FSSYNC_VnQry_hdr;
/**
* fssync protocol volume group query response message.
*/
typedef struct FSSYNC_VGQry_response {
afs_uint32 rw; /**< rw volume id */
afs_uint32 children[VOL_VG_MAX_VOLS]; /**< vector of children */
} FSSYNC_VGQry_response_t;
/**
* fssync protocol volume group update command message.
*/
typedef struct FSSYNC_VGUpdate_command {
afs_uint32 parent; /**< rw volume id */
afs_uint32 child; /**< volume id to associate with parent
* (can legally be the parent itself) */
char partName[16]; /**< name of vice partition on which this
* volume group resides */
} FSSYNC_VGUpdate_command_t;
#define FSSYNC_IN_PORT 2040
#define FSSYNC_UN_PATH "fssync.sock"
#define FSSYNC_ENDPOINT_DECL SYNC_ENDPOINT_DECL(FSSYNC_IN_PORT, FSSYNC_UN_PATH)
/*
* common interfaces
*/
extern void FSYNC_Init(void);
/*
* fsync client interfaces
*/
extern void FSYNC_clientFinis(void);
extern int FSYNC_clientInit(void);
extern int FSYNC_clientChildProcReconnect(void);
/* generic low-level interface */
extern afs_int32 FSYNC_askfs(SYNC_command * com, SYNC_response * res);
/* generic higher-level interface */
extern afs_int32 FSYNC_GenericOp(void * ext_hdr, size_t ext_len,
int command, int reason,
SYNC_response * res);
/*
* volume operations control interface
*
* FSYNC_VolOp must be called with the partition name and not the partition path.
*/
extern afs_int32 FSYNC_VolOp(VolumeId volume, char *partName, int com, int reason,
SYNC_response * res);
/* statistics query interface */
extern afs_int32 FSYNC_StatsOp(FSSYNC_StatsOp_hdr * scom, int command, int reason,
SYNC_response * res_in);
extern void FSYNC_fsInit(void);
/* volume group cache coherence interfaces */
extern afs_int32 FSYNC_VGCQuery(char * part, VolumeId parent,
FSSYNC_VGQry_response_t *, SYNC_response *res);
extern afs_int32 FSYNC_VGCAdd(char *part, VolumeId parent, VolumeId child,
int reason, SYNC_response *res);
extern afs_int32 FSYNC_VGCDel(char *part, VolumeId parent, VolumeId child,
int reason, SYNC_response *res);
extern afs_int32 FSYNC_VGCScan(char *part, int reason);
extern afs_int32 FSYNC_VerifyCheckout(VolumeId volume, char *partition,
afs_int32 command, afs_int32 reason);
#endif /* __fssync_h_ */
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